Understanding of high-temperature heat pump dryers

The main principle of using a high-temperature heat pump dryer in the drying process is to use the heat pump evaporator to absorb the heat energy from the external air, or to recover the waste heat from the exhaust during the drying process. After the compressor does work, the energy is transported (transferred) to the drying box, and the hot air inside the drying box

After repeated cycles of heating, the gas absorbs moisture from the material, cools and humidifies itself, and through the process of hot air dehumidification or condensation, the moisture in the material is discharged and carried away, ultimately achieving continuous drying of the material.

Experimental research results on a chemical heat pump (CHP) assisted convection dryer. The Ca (OH) 2 gas solid reaction of CaO/H2O/can be used for reverse hydration/dehydration reaction, which is used to store and recover the exhaust gas of the thermal dryer, in order to improve the thermal efficiency of the dryer. The cogeneration unit can perform

Operation to increase temperature levels and dehumidify air is a particularly attractive feature of dryness. A single cylindrical reactor was proposed to study the influence of heat exchange conditions in hot air production. The results indicate that hot air production increases rust resistance by expanding heat exchangers

The use of steel mesh has improved the heat transfer rate and increased air flow rate.

The effective utilization of thermal energy has become an increasingly important issue from the perspectives of energy and environment. Drying, which is a highly energy intensive process, is no exception in most industrial industries. Although some options save energy during drying, such as using a mechanical heat pump

The resulting options are often limited to specific applications.

A chemical heat pump (thermoelectric coupling) is proposed as a

One of the potential major technologies in terms of effective energy utilization in drying. Thermoelectric coupling can store thermal energy, such as waste heat from dryer exhaust, solar energy, geothermal energy, chemical energy, etc., and release energy at different temperature levels when heat is needed.